Monday, February 1, 2016

Projectile Motion Videos for Analysis

Use Logger Pro Video Analysis to Create Position v. Time and Velocity v. Time graphs for the horizontal and vertical motion of these projectiles.The meterstick for scaling is a 2 (TWO!) meter stick, so use that information accordingly....   You will need to find the slopes for any linear graphs (don't pretend to be taking the slope of a curve).  The motion is interesting once it leaves the hand of the thrower until just before it reaches the target/catcher.  Use the frame advance button to skip forward to the interesting part of the motion.











Just in case you've forgotten, here's the how to video for Logger Pro video analysis (for a different model, so your analysis will be different because you need X and Y position graphs and X and Y velocity graphs)...

Wednesday, January 27, 2016

Monday, January 18, 2016

Dealing with Smoosh Poosh and Friction on Inclines

As a reminder, we have dealt with forces on inclines previously, during the BFPM model.  That's where you're starting from in the first problem on this worksheet, the object is moving down the incline at a constant speed.  There were some common issues that I noticed on many of the boards, and I attempt to address them in this short video clip.

So try to address these concerns for the forces you've diagrammed on your whiteboard.  Once your FAD is a right triangle, and you're following our guidelines for direction of smoosh poosh and direction of friction, compare whiteboards for part 1 as a class.  Do not erase your board when moving on to part 2.  In part 2 the only thing that changes is that the amount of friction decreases.  In other words, there's no longer enough friction to make a balanced FAD, and you'll now have an FU filling in the rest of that gap.  That'll affect the motion of the object, so I guess I wasn't truthful in saying that only one thing changes, several things will change.  Use your diagrams and graphs to figure out what they are.  Good Luck!

Tuesday, January 5, 2016

Solving for additional information on velocity v time graph when given acceleration (slope) and displacement (area)
Here it is in pdf form

Wednesday, December 16, 2015